Avionics System Solutions

Satellite Navigation (EGNOS / GBAS)

We are active in the field of satellite navigation since many years and can draw on extensive system level knowledge as well as practical experience in many appplication areas.

EGNOS Navigation Land Earth Station (NLES)

EGNOS is a European augmentation system designed to improve the quality of GPS navigation. The current GPS signals are continuously monitored by a network of reference stations deployed over Europe. A central processing facility collects all data and calculates corrections and integrity information. This information is broadcast to the users via comunication satellites on the GPS frequency. The uplink of the signals is performed by several EGNOS Navigation Land Earth Stations (NLES). f.u.n.k.e. AVIONICS has been involved in the development of NLES equipment and test facilities since the year 2000. In the years 2011 until 2013 we developed the Integrity Box and the RF Payload Simulator for the second generation of the NLES which is in operational service in the meantime. These developments were performed on the basis of detailed customer specifications and following tailored ESA development processes. We support the operation of our equipment through long-term maintenance agreements at least until 2022.

Ground Based Augmentation System (GBAS)

The Ground Based Augmentation System (GBAS) is a dedicated augmentation system for the use of GPS in the approach and landing phase of aircraft. A ground station at the airport is monitoring GPS, calculating corrections and integrity information. This information is relayed to the aircraft via a data link in the aeronautical VHF band. The on-board system which receives and processes the data to guide the aircraft in this phase has been the topic of R&D projects in which f.u.n.k.e. AVIONICS has been involved since 2007. The on-board components were evaluated in flight tests at the airports of Braunschweig, Bremen and Toulouse.

In the frame of the R&D project LILOS (co-funded by the Federal Ministry for Economic Affairs and Energy) a GBAS Processing Unit was further developed and flight tested onboard a Cessna C172 of Braunschweig Technical University. This GPU-4000 has been designed in accordance with RTCA DO-253C and DO-246B and now builds a basis for further GBAS related onboard applications.